Low altitude UAV propagation channel modelling

The Unmanned Aerial Vehicle (UAV) is going to play an important role in fifth generation communication systems for establishing seamless coverage in various scenarios due to its low-cost and flexibility. Understanding the UAV wireless channels is the basis for its application. In this paper, a recently conducted measurement campaign for the UAV wireless propagation channel in a suburban scenario in Madrid is introduced. Based on the Universal Software-defined Radio Peripheral (USRP) equipment, narrowband measurements at frequency of 5.76 GHz and broadband measurements at frequency of 1.817 GHz are performed. The path loss, K-factor, power delay profiles (PDPs), multipath components (MPCs) and root-mean-square (RMS) delay spreads (DSs) are presented.